CN109039559B - Method, device and system for triggering uplink detection signal - Google Patents

Method, device and system for triggering uplink detection signal Download PDF

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CN109039559B
CN109039559B CN201810584459.9A CN201810584459A CN109039559B CN 109039559 B CN109039559 B CN 109039559B CN 201810584459 A CN201810584459 A CN 201810584459A CN 109039559 B CN109039559 B CN 109039559B
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srs
base station
control information
information corresponding
dci
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CN109039559A (en
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窦圣跃
李元杰
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path

Abstract

The embodiment of the invention provides a method, a device and a system for detecting an uplink channel, which at least solve the problem that the signaling overhead is high in the conventional aperiodic SRS transmission; and the problem of inflexible configuration in periodic SRS transmission. The method comprises the following steps: the method comprises the steps that a base station sends a Downlink Control Information (DCI) through a physical downlink control channel, wherein the DCI comprises Sounding Reference Signal (SRS) control information corresponding to each UE in a cell managed by the base station, and a is a positive integer not less than 2. The invention is applicable to the field of wireless communication.

Description

Method, device and system for triggering uplink detection signal
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method, an apparatus, and a system for uplink channel sounding.
Background
In an uplink of a wireless communication system, because a wireless channel has a frequency selective fading characteristic, a Base Station (BS) needs to schedule a User Equipment (UE) to perform data transmission in a frequency band with a good channel quality, so as to obtain a frequency selective gain and ensure uplink performance.
Specifically, the base station configures the UE to send a Sounding Reference Signal (SRS) for uplink channel quality estimation, and then performs frequency selective scheduling on uplink data transmission of the UE according to the detected Channel State Information (CSI).
In the existing Long Term Evolution (LTE), UE sends SRS based on two trigger mechanisms of trigger type 0 and trigger type 1, where the trigger type 0 corresponds to periodic SRS transmission and is triggered by high-level Radio Resource Control (RRC) signaling; the trigger type 1 corresponds to aperiodic SRS transmission, and is triggered by Downlink Control Information (DCI) signaling of a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH).
However, for the existing aperiodic SRS transmission, DCI of one PDCCH or EPDCCH can only configure one UE to transmit an SRS once, which results in a large signaling overhead for the system when there are multiple UEs in the wireless communication system that need to configure the SRS quickly in a short time.
Disclosure of Invention
Embodiments of the present invention provide a method, an apparatus, and a system for uplink channel sounding, so as to at least solve the problem of high signaling overhead in the existing aperiodic SRS transmission.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
in a first aspect, a method for triggering an uplink sounding signal is provided, where the method includes:
the method comprises the steps that a base station sends a Downlink Control Information (DCI) through a physical downlink control channel, wherein the DCI comprises Sounding Reference Signal (SRS) control information corresponding to each UE in a User Equipment (UE) in a cell managed by the base station, and a is a positive integer not less than 2.
In the method for triggering an uplink sounding signal provided in the embodiment of the present invention, one piece of DCI transmitted by a base station through a physical downlink control channel includes SRS control information corresponding to each UE in a UEs in a cell managed by the base station, where a is a positive integer not less than 2. That is to say, one DCI in the embodiment of the present invention may trigger multiple UEs to transmit an SRS at a time, so that when multiple UEs need to rapidly configure the SRS in a short time in a wireless communication system, signaling overhead of a physical layer PDCCH/EPDCCH may be saved.
In a second aspect, a method for triggering an uplink sounding signal is provided, where the method includes:
user Equipment (UE) receives Downlink Control Information (DCI) sent by a base station, wherein the DCI comprises Sounding Reference Signal (SRS) control information corresponding to each UE in a User Equipment (UE) in a cell managed by the base station, and a is a positive integer not less than 2;
and triggering the SRS according to the SRS control information corresponding to the UE after the UE detects that the DCI contains the SRS control information corresponding to the UE.
In the method for triggering an uplink sounding signal provided in the embodiment of the present invention, one piece of DCI transmitted by a base station through a physical downlink control channel includes SRS control information corresponding to each UE in a UEs in a cell managed by the base station, where a is a positive integer not less than 2. That is to say, one DCI in the embodiment of the present invention may trigger multiple UEs to transmit an SRS at a time, so that when multiple UEs need to rapidly configure the SRS in a short time in a wireless communication system, signaling overhead of a physical layer PDCCH/EPDCCH may be saved. Further, after detecting that the DCI includes the SRS control information corresponding to the UE, the UE may trigger the SRS according to the SRS control information corresponding to the UE, that is, different from a triggering mechanism of the periodic SRS in the prior art, in the embodiment of the present invention, the SRS is triggered by the DCI regardless of the periodic SRS or the aperiodic SRS, and since the DCI belongs to dynamic configuration, the DCI may be timely reconfigured or stopped, so that a requirement for flexible configuration may be satisfied.
In a third aspect, a base station is provided, which includes: a transmitting unit;
the sending unit is configured to send a downlink control information DCI through a physical downlink control channel, where the DCI includes sounding reference signal SRS control information corresponding to each UE in a user equipment UE in a cell managed by the base station, and a is a positive integer not less than 2.
Since the base station in the embodiment of the present invention may be configured to execute the method for triggering the uplink sounding signal in the first aspect, for example, the technical effect obtained by the base station in the first aspect may refer to the technical effect obtained when the base station executes the method for triggering the uplink sounding signal, and is not described herein again.
In a fourth aspect, a UE is provided, the UE comprising: a receiving unit and a processing unit;
the receiving unit is configured to receive a downlink control information DCI sent by a base station, where the DCI includes sounding reference signal SRS control information corresponding to each UE in a user equipment UE in a cell managed by the base station, and a is a positive integer not less than 2;
and the processing unit is configured to trigger the SRS according to the SRS control information corresponding to the UE after detecting that the DCI includes the SRS control information corresponding to the UE.
Since the UE in the embodiment of the present invention may be configured to execute the method for triggering the uplink sounding signal in the second aspect, for example, the technical effect obtained by the UE in the second aspect may refer to the technical effect obtained when the UE executes the method for triggering the uplink sounding signal in the second aspect, and details are not repeated here.
Optionally, in any one of the first to fourth aspects, a number of bits of SRS control information corresponding to an ith UE of the a UEs is kiWherein i is not less than 1 and not more than a and is an integer, kiIs a positive integer not less than 1.
In the embodiment of the invention, for different application scenes, k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000021
The combination status corresponds to different indication modes, and here, several indication modes are provided as follows:
in a first possible implementation manner, k of SRS control information corresponding to the ith UE is kiBit-characterized
Figure GDA0001820703290000022
S in a combined stateiThe combination status is respectively used for indicating a group of SRS parameters required by the UE when the SRS is transmitted aperiodically, and the combination status is used for indicating the UE to transmit the SRS parameters periodically
Figure GDA0001820703290000031
In a combined state except for siOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA0001820703290000032
siare integers.
In a second possible implementation manner, k of SRS control information corresponding to the ith UE is kiOne of the bits is used to instruct the UE to periodically transmit SRS or aperiodically transmit SRS, k isiThe rest of the bits ki-1 bit characterized
Figure GDA0001820703290000033
S in a combined stateiThe combination status is used for indicating a set of SRS parameters required by the UE to periodically transmit SRS or to aperiodically transmit SRS respectively, and the combination status is used for indicating the UE to periodically transmit SRS or aperiodically transmit SRS
Figure GDA0001820703290000034
In a combined state except for siOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA0001820703290000035
Figure GDA0001820703290000036
siis an integer, kiIs a positive integer greater than 1.
In a third possible implementation manner, k of SRS control information corresponding to the ith UE is set asiBit-characterized
Figure GDA0001820703290000037
S in a combined stateiThe combination status is respectively used for indicating a group of SRS parameters required by the UE when the UE periodically transmits SRS, and the combination status is used for indicating the SRS parameters required by the UE when the UE periodically transmits SRS
Figure GDA0001820703290000038
In a combined state except for siOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA0001820703290000039
siare integers.
Of course, kiBit-characterized
Figure GDA00018207032900000310
The combination status may correspond to other indication manners, which are only exemplary, and the embodiment of the present invention is not limited to this. In addition, theFor example, in the second possible implementation manner, the representation may be performed by another indication manner, that is:
k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA00018207032900000311
In a combined state
Figure GDA00018207032900000312
The combination status is used to indicate the UE to periodically transmit SRS, the UE transmits SRS
Figure GDA00018207032900000313
S in a combined stateiThe combination status is used for indicating s required when the UE periodically transmits the SRSiGroup period SRS parameters, the
Figure GDA00018207032900000314
In a combined state except foriOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA00018207032900000315
Figure GDA00018207032900000316
siis an integer, kiIs a positive integer greater than 1;
the above-mentioned
Figure GDA00018207032900000317
In a combined state except for
Figure GDA00018207032900000318
Out of combined state
Figure GDA00018207032900000319
The combination status indicates that the UE transmits the SRS aperiodically
Figure GDA00018207032900000320
T in the Combined StateiThe combination status is used to indicate t required when the UE transmits the SRS aperiodicallyiSet of aperiodic SRS parameters, the
Figure GDA00018207032900000321
In a combined stateiOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA00018207032900000322
tiare integers.
The embodiment of the present invention does not specifically limit the representation form of the indication manner in the second possible implementation manner.
Optionally, with reference to the first possible implementation manner, for the second aspect, the triggering, by the UE, the SRS according to the SRS control information corresponding to the UE may specifically include:
if the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required by the UE when the SRS is transmitted aperiodically, the UE transmits the SRS to the base station according to the group of SRS parameters required by the UE when the SRS is transmitted aperiodically;
and if the SRS control information corresponding to the UE is used for indicating that the SRS is not transmitted, the UE does not transmit the SRS to the base station.
Optionally, with reference to the second possible implementation manner, for the second aspect, the triggering, by the UE, the SRS according to the SRS control information corresponding to the UE may specifically include:
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits an SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate a group of SRS parameters required when the UE periodically transmits the SRS, the UE transmits the SRS to the base station according to the group of SRS parameters required when the UE periodically transmits the SRS;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits an SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate that the UE does not transmit an SRS, the UE does not transmit an SRS to the base station;
if one bit in the SRS control information corresponding to the UE is used for indicating the UE to send the SRS aperiodically, the other bits except the one bit in the SRS control information corresponding to the UE are used for indicating a group of SRS parameters required when the UE sends the SRS aperiodically, and the UE sends the SRS to the base station according to the group of SRS parameters required when the UE sends the SRS aperiodically;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE aperiodically transmits the SRS, the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate that the UE does not transmit the SRS, and the UE does not transmit the SRS to the base station.
Optionally, in the first aspect, the method may further include:
the base station sends a first radio resource control (RRC2) signaling to the UE, wherein the first RRC signaling comprises a first identifier, and the first identifier is used for indicating that the periodic SRS is triggered by the DCI.
Accordingly, in a possible implementation manner of the second aspect, if one bit of the SRS control information corresponding to the UE is used to instruct the UE to periodically transmit the SRS, before the UE transmits the SRS to the base station according to a set of SRS parameters required when the UE periodically transmits the SRS, or before the UE does not transmit the SRS to the base station, the method may further include:
the UE receives a second RRC (RRC2) signaling sent by the base station, wherein the second RRC signaling comprises a first identifier, and the first identifier is used for indicating that the periodic SRS is triggered by the DCI.
Optionally, if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits the SRS, the UE transmits the SRS to the base station according to a group of SRS parameters required when the UE periodically transmits the SRS, including:
if one bit in the SRS control information corresponding to the UE is used for indicating the UE to periodically send the SRS, the UE sends the SRS to the base station according to the first identifier and a group of SRS parameters required when the UE periodically sends the SRS;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits the SRS, the UE does not transmit the SRS to the base station, including:
and if one bit in the SRS control information corresponding to the UE is used for indicating the UE to periodically send the SRS, the UE does not send the SRS to the base station according to the first identifier.
Optionally, with reference to the third possible implementation manner, for the second aspect, the triggering, by the UE, the SRS according to the SRS control information corresponding to the UE may specifically include:
if the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required when the UE periodically transmits the SRS, the UE transmits the SRS to the base station according to the group of SRS parameters required when the UE periodically transmits the SRS;
and if the SRS control information corresponding to the UE is used for indicating that the SRS is not transmitted, the UE does not transmit the SRS to the base station.
Optionally, with reference to the first possible implementation manner, for the fourth aspect, the UE further includes a sending unit;
the processing unit is specifically configured to:
if the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required by the UE when the SRS is transmitted aperiodically, the SRS is transmitted to the base station through the transmitting unit according to the group of SRS parameters required by the UE when the SRS is transmitted aperiodically;
and if the SRS control information corresponding to the UE is used for indicating that the SRS is not transmitted, not transmitting the SRS to the base station.
Optionally, with reference to the second possible implementation manner, for the fourth aspect, the UE further includes a sending unit;
the processing unit is specifically configured to:
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits an SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate a group of SRS parameters required when the UE periodically transmits the SRS, transmitting the SRS to the base station through the transmitting unit according to the group of SRS parameters required when the UE periodically transmits the SRS;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits an SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate that the UE does not transmit an SRS and does not transmit an SRS to the base station;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE aperiodically transmits the SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate a set of SRS parameters required when the UE aperiodically transmits the SRS, transmitting the SRS to the base station through the transmitting unit according to the set of SRS parameters required when the UE aperiodically transmits the SRS;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE aperiodically transmits the SRS, the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate that the UE does not transmit the SRS and does not transmit the SRS to the base station.
Optionally, in the third aspect, the sending unit is further configured to send a first radio resource control RRC (RRC2) signaling to the UE, where the first RRC signaling includes a first identifier, and the first identifier is used to indicate that the periodic SRS is triggered by the DCI.
Accordingly, in a possible implementation manner of the fourth aspect, the receiving unit is further configured to receive, before the processing unit sends the SRS to the base station through the sending unit according to a set of SRS parameters required when the UE periodically sends the SRS, or before the processing unit does not send the SRS to the base station, a second RRC (RRC2) signaling sent by the base station, where the second RRC signaling includes a first identifier, and where one bit in the SRS control information corresponding to the UE is used to instruct the UE to periodically send the SRS.
Optionally, the processing unit is specifically configured to:
if one bit in the SRS control information corresponding to the UE is used to instruct the UE to periodically transmit the SRS, the SRS is transmitted to the base station through the transmitting unit according to the first identifier and a group of SRS parameters required when the UE periodically transmits the SRS, or the SRS is not transmitted to the base station according to the first identifier.
Optionally, with reference to the third possible implementation manner, for the fourth aspect, the UE further includes a sending unit.
The processing unit is specifically configured to:
if the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required when the UE periodically transmits the SRS, the SRS is transmitted to the base station through the transmitting unit according to the group of SRS parameters required when the UE periodically transmits the SRS;
and if the SRS control information corresponding to the UE is used for indicating that the SRS is not transmitted, not transmitting the SRS to the base station.
As can be seen from the second possible implementation manner or the third possible implementation manner, when the triggering method for an uplink sounding signal provided in the embodiment of the present invention is used for triggering a periodic SRS, a periodic SRS transmission stopping mechanism is provided, that is, one of the combination states is used for indicating that the UE does not transmit an SRS, so that the requirement of flexible configuration of the periodic SRS can be met, and the resource utilization rate is improved.
Optionally, in the first aspect, the method may further include:
and the base station sends a second RRC (RRC1) signaling to the UE, wherein the second RRC signaling carries the corresponding relation between the bit position of the DCI and each UE in the a UEs.
Accordingly, in the second aspect above, the method may further include:
the UE receives a first Radio Resource Control (RRC) 1 signaling sent by the base station, wherein the first RRC signaling carries the corresponding relation between the bit position of the DCI and each UE in the a UEs;
and the UE determines the SRS control information corresponding to the UE according to the corresponding relation.
Optionally, in the third aspect, the sending unit is further configured to send a second RRC (RRC1) signaling to the UE, where the second RRC signaling carries a correspondence between the bit position of the DCI and each UE in the a UEs.
Correspondingly, in the fourth aspect, the receiving unit is further configured to receive a first radio resource control RRC (RRC1) signaling sent by the base station, where the first RRC signaling carries a correspondence relationship between a bit position of the DCI and each UE in the a UEs;
and the processing unit determines SRS control information corresponding to the UE according to the corresponding relation.
Optionally, in the first aspect, the method may further include:
the base station sends a third RRC (RRC3) signaling to the UE, wherein the third RRC signaling carries indication information, the indication information is used for indicating triggering of one-time aperiodic SRS, the UE sends M times SRS, and M is a positive integer not less than 1.
Accordingly, in the second aspect above, the method may further include:
the UE receives a third RRC (RRC3) signaling sent by the base station, wherein the third RRC signaling carries indication information, the indication information is used for indicating triggering of one-time aperiodic SRS, the UE sends M times of SRS, and M is a positive integer not less than 1.
Optionally, the sending, by the UE, the SRS to the base station according to a group of SRS parameters required when the UE aperiodically sends the SRS may specifically include:
and the UE transmits the SRS to the base station for M times by combining the indication information according to a group of SRS parameters required when the UE transmits the SRS aperiodically.
Optionally, in the third aspect, the sending unit is further configured to send a third RRC (RRC3) signaling to the UE, where the third RRC signaling carries indication information, where the indication information is used to indicate that a primary aperiodic SRS is triggered, and the UE sends the SRS for M times, where M is a positive integer not less than 1.
Correspondingly, in the fourth aspect, the receiving unit is further configured to receive a third RRC (RRC3) signaling sent by the base station, where the third RRC signaling carries indication information, and the indication information is used to indicate that a one-time aperiodic SRS is triggered, and the UE sends the SRS for M times, where M is a positive integer not less than 1.
Optionally, the processing unit is specifically configured to:
and sending the SRS to the base station for M times through the sending unit by combining the indication information according to a group of SRS parameters required when the UE sends the SRS aperiodically.
When the triggering method or the base station for the uplink sounding signal provided by the embodiment of the invention is used for triggering the aperiodic SRS, the SRS can be triggered for M times through one DCI, and compared with the mode that one DCI can only trigger one UE to send the SRS once when the aperiodic SRS is triggered in the prior art, the method or the base station for triggering the uplink sounding signal can save DCI signaling and reduce signaling overhead.
In addition, for the existing periodic SRS transmission, the SRS is triggered by RRC configuration, and since RRC is semi-static configuration and cannot be reconfigured or stopped in time, it is difficult to meet the requirement of flexible configuration. To solve the problem, embodiments of the present invention provide a method, an apparatus, and a system for uplink channel sounding, so as to at least solve the problem that configuration is not flexible in the conventional periodic SRS transmission.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
in a fifth aspect, a method for triggering an uplink sounding signal is provided, where the method includes:
user Equipment (UE) receives Radio Resource Control (RRC) 4 signaling sent by a base station, wherein the RRC signaling comprises a first identifier which is used for indicating that a periodic SRS is triggered by Downlink Control Information (DCI);
the UE receives a DCI sent by the base station, wherein the DCI comprises Sounding Reference Signal (SRS) control information corresponding to an ith UE in a cell managed by the base station, i is more than or equal to 1 and less than or equal to N, N is the total number of the UEs in the cell managed by the base station, and i and N are positive integers;
and after the UE detects that the DCI contains the SRS control information corresponding to the UE, triggering the SRS according to the first identifier and the SRS control information corresponding to the UE.
Different from the triggering mechanism of the periodic SRS in the prior art, in the embodiment of the present invention, the base station sends an RRC signaling, where the RRC signaling includes a first identifier, and the first identifier is used to indicate that the SRS is triggered by the DCI. Therefore, after the UE receives a DCI which is sent by the base station and contains the SRS control information corresponding to the ith UE in the cell managed by the base station and detects that the DCI contains the SRS control information corresponding to the UE, the UE can trigger the SRS according to the SRS control information corresponding to the UE of the first identifier.
In a sixth aspect, a method for triggering an uplink sounding signal is provided, where the method includes:
a base station sends a Radio Resource Control (RRC) 4 signaling, wherein the RRC signaling comprises a first identifier, and the first identifier is used for indicating that a periodic Sounding Reference Signal (SRS) is triggered by Downlink Control Information (DCI);
the base station sends a DCI through a physical downlink control channel, wherein the DCI comprises SRS control information corresponding to the ith UE in a cell managed by the base station, i is more than or equal to 1 and less than or equal to N, N is the total number of the UEs in the cell managed by the base station, and i and N are positive integers.
Different from the triggering mechanism of the periodic SRS in the prior art, in the embodiment of the present invention, the base station sends an RRC signaling, where the RRC signaling includes a first identifier, and the first identifier is used to indicate that the SRS is triggered by the DCI. Therefore, after the UE receives a DCI which is sent by the base station and contains the SRS control information corresponding to the ith UE in the cell managed by the base station and detects that the DCI contains the SRS control information corresponding to the UE, the UE can trigger the SRS according to the SRS control information corresponding to the UE of the first identifier.
In a seventh aspect, a UE is provided, where the UE includes: a receiving unit and a processing unit;
the receiving unit is configured to receive a radio resource control RRC (RRC4) signaling sent by a base station, where the RRC signaling includes a first identifier, and the first identifier is used to indicate that a periodic SRS is triggered by downlink control information DCI;
the receiving unit is further configured to receive a DCI sent by the base station, where the DCI includes SRS control information corresponding to an ith UE in a cell managed by the base station, i is greater than or equal to 1 and less than or equal to N, N is a total number of UEs in the cell managed by the base station, and i and N are positive integers;
and the processing unit is configured to trigger an SRS according to the first identifier and the SRS control information corresponding to the UE after detecting that the DCI includes the SRS control information corresponding to the UE.
Since the UE in the embodiment of the present invention may be configured to execute the method for triggering the uplink sounding signal in the fifth aspect, for example, the technical effect obtained by the UE in the fifth aspect may refer to the technical effect obtained when the UE executes the method for triggering the uplink sounding signal, and details are not repeated here.
In an eighth aspect, there is provided a base station, comprising: a transmitting unit;
the sending unit is configured to send a radio resource control RRC (RRC4) signaling, where the RRC signaling includes a first identifier, and the first identifier is used to indicate that a periodic sounding reference signal SRS is triggered by downlink control information DCI;
the sending unit is further configured to send a DCI through a physical downlink control channel, where the DCI includes SRS control information corresponding to an ith UE in a cell managed by the base station, i is greater than or equal to 1 and less than or equal to N, N is a total number of UEs in the cell managed by the base station, and i and N are positive integers.
Since the base station in the embodiment of the present invention may be configured to execute the method for triggering the uplink sounding signal in the sixth aspect, for example, the technical effect obtained by the base station in the sixth aspect may refer to the technical effect obtained when the base station executes the method for triggering the uplink sounding signal, and details are not repeated here.
Optionally, in the aboveIn any one of the fifth to eighth aspects, the number of bits of the SRS control information for the ith UE is kiSaid k isiOne of the bits is used to instruct the UE to periodically transmit SRS or aperiodically transmit SRS, k isiThe rest of the bits ki-1 bit characterized
Figure GDA0001820703290000081
The s combination status in the combination status is respectively used for indicating a set of SRS parameters required by the UE when the UE periodically transmits the SRS or does not periodically transmit the SRS, and the s combination status in the combination status is used for indicating a set of SRS parameters required by the UE when the UE periodically transmits the SRS or does not periodically transmit the SRS
Figure GDA0001820703290000082
One of the combination states other than the s combination state is used to indicate that the UE does not transmit an SRS,
Figure GDA0001820703290000083
s is an integer, kiIs a positive integer greater than 1.
Optionally, for the fifth aspect, the triggering, by the UE, the SRS according to the first identifier and the SRS control information corresponding to the UE may specifically include:
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits an SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate a group of SRS parameters required when the UE periodically transmits the SRS, the UE transmits the SRS to the base station according to the first identifier and the group of SRS parameters required when the UE periodically transmits the SRS;
if one bit in the SRS control information corresponding to the UE is used for indicating the UE to periodically send the SRS, and the rest bits except the one bit in the SRS control information corresponding to the UE are used for indicating the UE not to send the SRS, the UE does not send the SRS to the base station according to the first identifier;
if one bit in the SRS control information corresponding to the UE is used for indicating the UE to send the SRS aperiodically, the other bits except the one bit in the SRS control information corresponding to the UE are used for indicating a group of SRS parameters required when the UE sends the SRS aperiodically, and the UE sends the SRS to the base station according to the group of SRS parameters required when the UE sends the SRS aperiodically;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE aperiodically transmits the SRS, the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate that the UE does not transmit the SRS, and the UE does not transmit the SRS to the base station.
Optionally, for the seventh aspect, the UE further includes a sending unit.
The processing unit is specifically configured to:
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE periodically transmits an SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate a group of SRS parameters required when the UE periodically transmits the SRS, transmitting the SRS to the base station through the transmitting unit according to the first identifier and the group of SRS parameters required when the UE periodically transmits the SRS;
if one bit in the SRS control information corresponding to the UE is used for indicating the UE to periodically transmit the SRS, and the rest bits except the one bit in the SRS control information corresponding to the UE are used for indicating the UE not to transmit the SRS, not transmitting the SRS to the base station according to the first identifier;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE aperiodically transmits the SRS, and the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate a set of SRS parameters required when the UE aperiodically transmits the SRS, transmitting the SRS to the base station through the transmitting unit according to the set of SRS parameters required when the UE aperiodically transmits the SRS;
if one bit in the SRS control information corresponding to the UE is used to indicate that the UE aperiodically transmits the SRS, the remaining bits except the one bit in the SRS control information corresponding to the UE are used to indicate that the UE does not transmit the SRS and does not transmit the SRS to the base station.
Optionally, in any one of the fifth to eighth aspects, the cyclic redundancy check CRC of the DCI is scrambled by a first radio network temporary identifier RNTI or a second RNTI, where the first RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station periodically transmits the SRS, and the second RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station aperiodically transmits the SRS.
Optionally, for the fifth aspect, after detecting that the DCI includes the SRS control information corresponding to the UE, the UE triggers an SRS according to the first identifier and the SRS control information corresponding to the UE, including:
if the UE detects that the DCI comprises SRS control information corresponding to the UE by using the first RNTI, and the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required when the UE periodically transmits SRS, the UE transmits the SRS to the base station according to the first identifier and the group of SRS parameters required when the UE periodically transmits the SRS;
if the UE detects that the DCI contains SRS control information corresponding to the UE by using the first RNTI and the SRS control information corresponding to the UE is used for indicating that the UE does not send SRS, the UE does not send SRS to the base station according to the first identifier;
if the UE detects that the DCI comprises SRS control information corresponding to the UE by using the second RNTI, and the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required by the UE when the UE sends the SRS aperiodically, the UE sends the SRS to the base station according to the first identifier and the group of SRS parameters required by the UE when the UE sends the SRS aperiodically;
and if the UE detects that the DCI contains the SRS control information corresponding to the UE by using the second RNTI and the SRS control information corresponding to the UE is used for indicating that the UE does not send the SRS, the UE does not send the SRS to the base station according to the first identifier.
Optionally, for the seventh aspect, the UE further includes a sending unit.
The processing unit is specifically configured to:
if the UE detects that the DCI comprises SRS control information corresponding to the UE by using the first RNTI and the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required when the UE periodically transmits SRS, and the UE transmits the SRS to the base station through the transmitting unit according to the first identifier and the group of SRS parameters required when the UE periodically transmits the SRS;
if the UE detects that the DCI contains SRS control information corresponding to the UE by using the first RNTI and the SRS control information corresponding to the UE is used for indicating that the UE does not send SRS, the UE does not send the SRS to the base station according to the first identifier;
if the UE detects that the DCI comprises SRS control information corresponding to the UE by using the second RNTI and the SRS control information corresponding to the UE is used for indicating a group of SRS parameters required by the UE when the UE transmits the SRS aperiodically, the UE transmits the SRS to the base station through the transmitting unit according to the first identifier and the group of SRS parameters required by the UE when the UE transmits the SRS aperiodically;
and if the UE detects that the DCI contains the SRS control information corresponding to the UE by adopting the second RNTI and the SRS control information corresponding to the UE is used for indicating that the UE does not send the SRS, the UE does not send the SRS to the base station according to the first identifier.
It should be noted that, the above is only an exemplary implementation manner that provides two types of signals, where DCI may be used to trigger an aperiodic SRS and may also be used to trigger a periodic SRS, and when a UE receives DCI, it may determine whether to trigger the aperiodic SRS or trigger the periodic SRS.
In a ninth aspect, there is provided a base station comprising: a processor, a memory, a system bus, and a communication interface;
the memory is configured to store a computer executable instruction, the processor is connected to the memory through the system bus, and when the base station runs, the processor executes the computer executable instruction stored in the memory, so as to enable the base station to execute the method for triggering the uplink sounding reference signal according to the first aspect or any one of the options of the first aspect, or to enable the base station to execute the method for triggering the uplink sounding reference signal according to any one of the options of the sixth aspect or the sixth aspect.
Since the base station provided in the embodiment of the present invention may execute the method for triggering the uplink sounding signal, reference may be made to the embodiment of the method for obtaining technical effects, and details of the embodiment of the present invention are not repeated herein.
A tenth aspect provides a readable medium, which includes computer executable instructions, and when a processor of a base station executes the computer executable instructions, the base station executes the method for triggering an uplink sounding signal as described in the first aspect or any one of the alternatives of the first aspect, or causes the base station to execute the method for triggering an uplink sounding signal as described in the sixth aspect or any one of the alternatives of the sixth aspect.
Since the readable medium provided in the embodiment of the present invention can execute the method for triggering the uplink sounding signal, the technical effect obtained by the readable medium can refer to the embodiment of the method, and the embodiment of the present invention is not described herein again.
In an eleventh aspect, a user equipment UE is provided, including: a processor, a memory, a system bus, and a communication interface;
the memory is configured to store a computer executable instruction, the processor is connected to the memory through the system bus, and when the UE runs, the processor executes the computer executable instruction stored in the memory, so as to enable the UE to perform the method for triggering the uplink sounding signal according to the second aspect or any one of the options of the second aspect, or to enable the UE to perform the method for triggering the uplink sounding signal according to the fifth aspect or any one of the options of the fifth aspect.
Since the UE provided in the embodiment of the present invention can execute the method for triggering the uplink sounding signal, reference may be made to the embodiment of the method for obtaining technical effects, and details of the embodiment of the present invention are not repeated herein.
In a twelfth aspect, an embodiment of the present invention provides a readable medium, which includes a computer executable instruction, and when a processor of a base station executes the computer executable instruction, the UE executes the method for triggering an uplink sounding signal as described in the second aspect or any optional manner of the second aspect, or causes the UE to execute the method for triggering an uplink sounding signal as described in the fifth aspect or any optional manner of the fifth aspect.
Since the readable medium provided in the embodiment of the present invention can execute the method for triggering the uplink sounding signal, the technical effect obtained by the readable medium can refer to the embodiment of the method, and the embodiment of the present invention is not described herein again.
A thirteenth aspect provides a system for triggering an uplink sounding signal, where the system for triggering an uplink sounding signal includes a base station and a plurality of UEs, where the base station may be the base station in any optional manner of the third aspect or the third aspect, and the plurality of UEs may be the UEs in any optional manner of the fourth aspect or the fourth aspect; alternatively, the first and second electrodes may be,
the base station may be the base station described in the eighth aspect or any optional manner of the eighth aspect, and the plurality of UEs may be the UEs described in the seventh aspect or any optional manner of the seventh aspect.
Optionally, the base station may also be the base station according to the ninth aspect, and the plurality of UEs may also be UEs according to the tenth aspect; alternatively, the base station may be the base station according to the eleventh aspect, and the plurality of UEs may be the UEs according to the twelfth aspect.
The system for triggering the uplink sounding reference signal provided in the embodiment of the present invention includes the base station described in the third aspect or any optional manner of the third aspect, and the UE described in the fourth aspect or any optional manner of the fourth aspect; or, the base station in any optional manner of the above eighth aspect or the eighth aspect and the UE in any optional manner of the above seventh aspect or the seventh aspect are included, so that the technical effect obtained by the base station may refer to an embodiment of the base station or the UE, and details of the embodiment of the present invention are not repeated herein.
Drawings
Fig. 1 is a schematic diagram of a system architecture for triggering an uplink sounding signal according to an embodiment of the present invention;
fig. 2 is a first schematic interaction diagram of a method for triggering an uplink sounding signal according to an embodiment of the present invention;
fig. 3 is a schematic interaction diagram of a triggering method of an uplink sounding signal according to an embodiment of the present invention;
fig. 4 is a third schematic interaction diagram of a triggering method for an uplink sounding signal according to an embodiment of the present invention;
fig. 5 is a fourth schematic interaction diagram of a triggering method for an uplink sounding signal according to an embodiment of the present invention;
fig. 6 is an interaction schematic diagram of a triggering method of an uplink sounding signal according to an embodiment of the present invention;
fig. 7 is a sixth schematic interaction diagram of a triggering method for an uplink sounding signal according to an embodiment of the present invention;
fig. 8 is a seventh schematic interaction diagram of a triggering method for an uplink sounding signal according to an embodiment of the present invention;
fig. 9 is a first schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 10 is a first schematic structural diagram of a UE according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a UE structure according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 13 is a third schematic structural diagram of a UE according to an embodiment of the present invention.
Detailed Description
For clarity and conciseness of the following descriptions of the various embodiments, a brief introduction to the related art is first given:
as described in the background art, in the existing LTE protocol, a UE transmits an SRS based on two trigger mechanisms, namely, trigger type 0 and trigger type 1, where the trigger type 0 corresponds to periodic SRS transmission and is triggered by RRC signaling; the trigger type 1 corresponds to aperiodic SRS transmission and is triggered by DCI of PDCCH or EPDCCH, where DCI format 0/4/1a is used for frequency division duplex (full english: FDD) and time division duplex (full english: TDD), and DCI format 2B/2C/2D is only used for TDD.
In the prior art, for aperiodic SRS transmission, one DCI triggers one UE to transmit an SRS once. Table one is a trigger type 1DCI format 4SRS request type table.
Watch 1
SRS request field value Description of the invention
“00” Non-triggered state
“01” RRC configured first set of SRS parameters
“10” RRC configured second set of SRS parameters
“11” RRC configured third set of SRS parameters
As can be seen from table one, for one UE, the higher layer RRC signaling may configure three sets of RRC parameters and one non-triggered state for it, where one set of RRC parameters is triggered or indicates that SRS is not triggered (i.e., non-triggered state) each time by 2 bits in DCI format 4.
For DCI format 0/1a/2B/2C/2D, higher layer RRC signaling configures each UE with a set of SRS parameters, which is triggered by 1 bit in DCI format 0/1 a/2B/2C/2D.
However, for the existing aperiodic SRS transmission, DCI of one PDCCH or EPDCCH can only configure one UE to transmit an SRS once, which results in a large signaling overhead when there are multiple UEs in a wireless communication system that need to configure SRS rapidly in a short time; for the existing periodic SRS transmission, SRS is triggered by RRC configuration, and since RRC is semi-static configuration (the configuration effective period is long, and usually needs 20-30 milliseconds (ms)), it is not possible to reconfigure or stop in time, so it is difficult to meet the requirement of flexible configuration.
In order to solve the problem, embodiments of the present invention provide a method, an apparatus, and a system for triggering an uplink sounding signal, and a technical solution in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
It should be noted that, for the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same items or similar items with substantially the same functions and actions, and those skilled in the art can understand that the words such as "first" and "second" do not limit the quantity and execution order.
It should be noted that "/" in this context means "or", for example, A/B may mean A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. "plurality" means two or more than two.
As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
A wireless communication network is a network that provides wireless communication functions. The wireless communication network may employ different communication technologies such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), carrier multiple access/collision avoidance (SC-FDMA), Code Division Multiple Access (CDMA). Networks can be classified into 2G (english: generation) networks, 3G networks or 4G networks according to factors such as capacity, rate and delay of different networks. Typical 2G networks include global system for mobile communications (GSM) networks or General Packet Radio Service (GPRS) networks, typical 3G networks include Universal Mobile Telecommunications System (UMTS) networks, and typical 4G networks include LTE networks. The UMTS network may also be referred to as a Universal Terrestrial Radio Access Network (UTRAN), and the LTE network may also be referred to as an evolved universal terrestrial radio access network (E-UTRAN). According to different resource allocation modes, the method can be divided into a cellular communication network and a Wireless Local Area Network (WLAN), wherein the cellular communication network is mainly scheduled and the WLAN is mainly competitive. The aforementioned 2G, 3G and 4G networks are all cellular communication networks. It should be understood by those skilled in the art that the technical solutions provided by the embodiments of the present invention may also be applied to other wireless communication networks, such as 4.5G or 5G networks, or other non-cellular communication networks as the technology advances. For simplicity, embodiments of the present invention may sometimes refer to a wireless communication network as a network.
The UE is a terminal device, and may be a mobile terminal device or an immobile terminal device. The device is mainly used for receiving or sending service data. The user equipments may be distributed in networks where the user equipments have different names, such as: a terminal, mobile station, subscriber unit, station, cellular telephone, personal digital assistant, wireless modem, wireless communication device, handheld device, laptop computer, cordless telephone, wireless local loop station, or the like. The user equipment may communicate with one or more core networks, such as to exchange voice and/or data with a Radio Access Network (RAN), via an access portion of the radio communication network.
A base station apparatus, which may also be referred to as a base station, is a device deployed in a radio access network to provide wireless communication functions. For example, the apparatus for providing a base station function in a 2G network includes a Base Transceiver Station (BTS) and a Base Station Controller (BSC), the apparatus for providing a base station function in a 3G network includes a node B (NodeB) and a Radio Network Controller (RNC), the apparatus for providing a base station function in a 4G network includes an evolved node B (eNB), and the apparatus for providing a base station function in a WLAN is an access point (access point).
In addition, various aspects are described in conjunction with a wireless network device, which may be a base station, and the base station may be configured to communicate with one or more user devices, and may also be configured to communicate with one or more base stations having some user device functions (e.g., communication between a macro base station and a micro base station, such as an access point); the wireless network device may also be a user equipment, which may be used for one or more user equipments (e.g. device-to-device (abbreviated as D2D)) communication and may also be used for communication with one or more base stations. The user equipment may also be referred to as a user terminal and may include some or all of the functionality of a system, subscriber unit, subscriber station, mobile radio terminal, mobile device, node, device, remote station, remote terminal, wireless communication device, wireless communication apparatus, or user agent. The user device may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a smart phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a laptop computer, a handheld communication device, a handheld computing device, a satellite radio, a wireless modem card, and/or other processing device for communicating over a wireless system. A base station may also be called, and may include some or all of the functionality of, an access point, a node B, an evolved node B, or some other network entity. The base stations may communicate with the wireless terminals over the air interface. The communication may be through one or more sectors. The base station may act as a router between the wireless terminal and the rest of the access network, including an Internet Protocol (IP) network, by converting received air-interface frames to IP packets. The base station may also coordinate the management of attributes for the air interface and may also be a gateway between a wired network and a wireless network.
This application is intended to present various aspects, embodiments or features around a system that may include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.
Additionally, in embodiments of the present invention, the term "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.
In the embodiment of the present invention, information (english: information), signal (english: signal), message (message), and channel (english: channel) may be mixed, and it should be noted that the intended meanings are consistent when the differences are not emphasized. "of", "corresponding" and "corresponding" may sometimes be used in combination, it being noted that the intended meaning is consistent when no distinction is made.
The network architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.
The embodiment of the present invention is described by referring to a 4G network scenario in a wireless communication network, and it should be noted that the scheme in the embodiment of the present invention may also be applied to other wireless communication networks, and the corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.
Fig. 1 is a schematic diagram of an architecture of an uplink sounding signal triggering system according to an embodiment of the present invention, where the uplink sounding signal triggering system includes a base station and a plurality of UEs in a cell managed by the base station. Wherein the base station may communicate with each of the plurality of UEs separately.
Based on the triggering system of the uplink sounding reference signal shown in fig. 1, an embodiment of the present invention provides a method for triggering an uplink sounding reference signal, which takes interaction between a base station and a UE1 as an example for explanation, where the UE1 is any UE in a cell managed by the base station, as shown in fig. 2, the method includes steps S201 to S203:
s201, a base station sends a DCI through a physical downlink control channel, the DCI includes SRS control information corresponding to each UE in a number of UEs in a cell managed by the base station, and a is a positive integer not less than 2.
S202, UE1 receives the DCI transmitted by the base station.
S203 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, and trigger SRS according to the SRS control information corresponding to UE 1.
Specifically, in step S201 of the embodiment of the present invention:
in the LTE system, a physical downlink control channel is used to transmit DCI to a UE, and the DCI can be regarded as a message for carrying control information, such as: one or more of uplink and downlink scheduling information, resource allocation, a transmission format, a request aperiodic Channel Quality Indicator (CQI) report, and uplink power control, which is not specifically limited in this embodiment of the present invention.
The a UEs in the cell managed by the base station may be selected randomly by the base station, or may be selected by the base station through a preset policy, for example: the base station may group N UEs in a cell managed by the base station to obtain M groups of UEs, where a UEs in the cell managed by the base station are UEs in one group of UEs in the M groups of UEs, where N, M are positive integers, and the grouping principle includes, but is not limited to, the following:
different services of the UE, a geographic location of the UE, a power size of the UE, or different types of UEs.
The embodiment of the present invention does not specifically limit the selection manner of a UEs in a cell managed by a base station.
Optionally, the bit number of the SRS control information corresponding to the ith UE in the a UEs in the cell managed by the base station is kiWherein i is not less than 1 and not more than a and is an integer, kiIs a positive integer not less than 1.
That is to say, in the embodiment of the present invention, the number of bits of the SRS control information corresponding to the ith UE may not be limited to 1 or 2, and may be set to any positive integer not less than 1, such as 3, 4, 5, and the like, as needed, which is not specifically limited in this embodiment of the present invention.
As will be readily understood by one of ordinary skill in the art, kiBits can be characterized
Figure GDA0001820703290000151
The combination status, for example, 2 bits, can represent 4 combination statuses, which are respectively the combination statuses corresponding to "00", "01", "10" and "11". In the embodiment of the invention, for different application scenes, k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000161
The combination status corresponds to different indication modes, and here, several indication modes are provided as follows:
indication mode one, DCI is only used for triggering aperiodic SRS, k of SRS control information corresponding to ith UE in a UEsiBit-characterized
Figure GDA0001820703290000162
S in a combined stateiThe combination status is used for indicating the UE non-periodicitySet of SRS parameters (up to s) required for sexual SRS transmissioniGroup, may be less than siGroups, e.g., where a certain combined state is reserved, temporarily not allocated),
Figure GDA0001820703290000163
in a combined state except foriOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA0001820703290000164
siare integers. It is to be understood that alternatively, a single bit may be used to indicate that the UE does not transmit SRS, siThe values of (A) are also changed accordingly, and detailed description is omitted.
Indication mode two, DCI may be used to trigger an aperiodic SRS, or may be used to trigger a periodic SRS, where k is SRS control information corresponding to the ith UE of a UEsiOne of the bits is used to instruct the UE to periodically transmit SRS or to aperiodically transmit SRS, kiThe rest of the bits ki-1 bit characterized
Figure GDA0001820703290000165
S in a combined stateiThe combination status is used to indicate a set of SRS parameters (at most s) required by the UE to periodically transmit SRS or to aperiodically transmit SRSiGroup, may be less than siGroups, e.g., where a certain combined state is reserved, temporarily not allocated),
Figure GDA0001820703290000166
in a combined state except foriOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA0001820703290000167
siis an integer, kiIs a positive integer greater than 1. It is to be understood that one bit alone may be used to indicate that the UE does not transmit SRS, siThe values of (A) are also changed accordingly, and detailed description is omitted.
Indicating mode three, the DCI is only used for triggering the periodic SRS, and k of SRS control information corresponding to ith UE in a plurality of UEsiBit-characterized
Figure GDA0001820703290000168
S in a combined stateiThe combination status is respectively used for indicating a set of SRS parameters required when the UE periodically transmits the SRS,
Figure GDA0001820703290000169
in a combined state except foriOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA00018207032900001610
siare integers. It is to be understood that one bit alone may be used to indicate that the UE does not transmit SRS, siThe values of (A) are also changed accordingly, and detailed description is omitted.
Of course, kiBit-characterized
Figure GDA00018207032900001611
The combination status may correspond to other indication manners, which are only exemplary, and the embodiment of the present invention is not limited to this. In addition, different representation forms are possible for the same indication mode, for example, for the second indication mode, another indication mode can be used for representation, that is:
k of SRS control information corresponding to ith UE in a UEsiBit-characterized
Figure GDA00018207032900001612
In a combined state
Figure GDA00018207032900001613
The combination status is used to indicate the UE to periodically transmit SRS, the UE transmits SRS
Figure GDA00018207032900001614
In a combined stateS ofiThe combination status is used for indicating s required when the UE periodically transmits the SRSiGroup period SRS parameters, the
Figure GDA00018207032900001615
In a combined state except foriOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA00018207032900001616
siis an integer, kiIs a positive integer greater than 1;
Figure GDA00018207032900001617
combined state remover
Figure GDA00018207032900001618
Out of combined state
Figure GDA00018207032900001619
The combination status indicates that the UE transmits the SRS aperiodically
Figure GDA00018207032900001620
T in the Combined StateiThe combination status is used to indicate t required when the UE transmits the SRS aperiodicallyiSet of aperiodic SRS parameters, the
Figure GDA00018207032900001621
In a combined stateiOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure GDA00018207032900001622
tiare integers.
The embodiment of the present invention does not specifically limit the representation form of the second indication mode.
It should be noted that, as can be seen from the indication of the second indication manner and the third indication manner, when the triggering method of the uplink sounding signal provided in the embodiment of the present invention is used for triggering the periodic SRS, a periodic SRS transmission stopping mechanism is provided, that is, one of the combination states is used for indicating that the UE does not transmit the SRS, so that the requirement of flexible configuration of the periodic SRS can be met, and the resource utilization rate is improved.
Specifically, in step S203 in the embodiment of the present invention:
the UE1 may detect the position of the SRS control information corresponding to the UE1 included in the DCI as follows:
in a first mode, the UE1 receives an RRC1 signaling sent by a base station, where the RRC1 signaling carries a corresponding relationship between a bit position of DCI and each UE in a UEs; the UE1 determines SRS control information corresponding to the UE1 according to the correspondence.
Illustratively, the correspondence relationship contained in the RRC1 signaling may be:
(1) the position of the SRS control information bit of the UE1 in the DCI corresponds to the unique identifier of the UE1, where the position may include a start position and a length of occupied bits, or may include a start position and an end position, and is not limited specifically; alternatively, the first and second electrodes may be,
(2) a corresponding list of the positions of the plurality of UEs and the SRS control information bits of the plurality of UEs in the DCI is predefined, the RRC1 signals the number of the UE1 in the corresponding list, and the UE1 obtains the position of the SRS control information bits of the UE1 in the DCI according to the list lookup.
It should be noted that the RRC1 signaling in the embodiment of the present invention may specifically be a corresponding relationship between a bit position carrying DCI in the existing RRC signaling and each UE in a UEs, so that the RRC1 signaling may carry SRS parameters issued by the base station to the UE 1; of course, the RRC1 signaling may also be a newly defined signaling, which is used to carry a corresponding relationship between the bit position of the DCI and each UE in the a UEs, so that the RRC1 signaling does not carry the SRS parameter issued by the base station to the UE1, and is an RRC signaling issued separately, which is not specifically limited in this embodiment of the present invention.
In addition, it should be noted that the RRC1 signaling is defined for distinguishing from RRC signaling such as RRC2 signaling, RRC3 signaling, and RRC4 signaling in the embodiment of the present invention, and those skilled in the art can understand that the numbers following the RRC do not limit the number and the execution order, and do not have any other special meanings, and the unified description is provided herein and will not be repeated herein.
In the second mode, the UE1 acquires the binding relationship between the bit position of the pre-configured DCI and the UE; the UE1 determines SRS control information corresponding to the UE1 according to the binding relationship.
Illustratively, a unique identity of the UE (such as an identity number (identity or identifier, abbreviated as ID) may be bound to a bit position of the DCI). For example, suppose a DCI contains SRS control information corresponding to M UEs, (ID mod M), i.e., a bit position of the UE1, where mod () represents a remainder.
It should be noted that, in the embodiment of the present invention, a Cyclic Redundancy Check (CRC) of DCI sent by a base station may be scrambled by a Radio Network Temporary Identifier (RNTI), so that after the UE1 receives the DCI, before the UE1 detects a position of SRS control information corresponding to the UE1 included in the DCI in the above manner, the UE1 first needs to descramble the DCI, and only if the descrambling is successful, the UE1 may detect whether the DCI includes the SRS control information corresponding to the UE 1.
Optionally, different from the prior art, when a UE is a UE in one group of UEs after the base station groups N UEs in a cell managed by the base station in the grouping manner, the base station may configure the same RNTI for the a UEs, and the RNTI may be referred to as a group RNTI of the group where the a UEs are located. Thus, when the UE1 receives the DCI and descrambles the DCI, the group RNTI is detected, and only if the UE1 is a UE in the group where the a UEs are located, the UE1 will descramble successfully, otherwise, the descrambling will fail.
Specifically, k of the SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000181
When the combination status corresponds to different indication modes, the specific implementation of triggering the SRS by the UE1 according to the SRS control information corresponding to the UE1 is also different. Wherein the content of the first and second substances,
when k of SRS control information corresponding to ith UEiBit-characterized
Figure GDA0001820703290000182
In the first indication mode corresponding to the combination status, as shown in fig. 3, after the UE1 detects that the DCI includes the SRS control information corresponding to the UE1, triggering the SRS according to the SRS control information corresponding to the UE1 (step S203) may specifically include steps S203a1 or S203a 2:
after S203a1 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, if the SRS control information corresponding to UE1 indicates that UE1 aperiodically transmits an SRS, UE1 transmits the SRS to the base station according to the SRS parameters required by UE1 aperiodically transmitting the SRS. Alternatively, the first and second electrodes may be,
after detecting that the DCI includes the SRS control information corresponding to the UE1, the S203a2 and the UE1, if the SRS control information corresponding to the UE1 is used to instruct not to transmit the SRS, the UE1 does not transmit the SRS to the base station.
When k of SRS control information corresponding to ith UEiBit-characterized
Figure GDA0001820703290000183
When the combination status corresponds to the second indication method, as shown in fig. 4, after detecting that the DCI includes the SRS control information corresponding to the UE1, the UE1 triggering the SRS according to the SRS control information corresponding to the UE1 (step S203) may specifically include any one of steps S203b1 to S203b 4:
after S203b1 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, if one bit of the SRS control information corresponding to UE1 is used to instruct UE1 to periodically transmit an SRS, and the remaining bits of the SRS control information corresponding to UE1 except the one bit are used to instruct UE1 to periodically transmit a set of SRS parameters required when the SRS is periodically transmitted, UE1 transmits the SRS to the base station according to the set of SRS parameters required when UE1 periodically transmits the SRS. Alternatively, the first and second electrodes may be,
after S203b2 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, if one bit of the SRS control information corresponding to UE1 is used to instruct UE1 to periodically transmit an SRS, and the remaining bits of the SRS control information corresponding to UE1 except the one bit are used to instruct UE1 not to transmit an SRS, UE1 does not transmit an SRS to the base station. Alternatively, the first and second electrodes may be,
after S203b3 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, if one bit of the SRS control information corresponding to UE1 is used to instruct UE1 to transmit an SRS aperiodically and the remaining bits of the SRS control information corresponding to UE1 except the one bit are used to instruct UE1 to transmit an SRS aperiodically, UE1 transmits an SRS to the base station according to the set of SRS parameters required when UE1 transmits an SRS aperiodically. Alternatively, the first and second electrodes may be,
after S203b4 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, if one bit of the SRS control information corresponding to UE1 is used to instruct UE1 to aperiodically transmit SRS, and the remaining bits of the SRS control information corresponding to UE1 except the one bit are used to instruct UE1 not to transmit SRS, UE1 does not transmit SRS to the base station.
When k of SRS control information corresponding to ith UEiBit-characterized
Figure GDA0001820703290000184
When the combination status corresponds to the third indication manner, as shown in fig. 5, after the UE1 detects that the DCI includes the SRS control information corresponding to the UE1, triggering the SRS according to the SRS control information corresponding to the UE1 (step S203) may specifically include steps S203c1 or S203c 2:
after S203c1 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, if the SRS control information corresponding to UE1 is used to instruct UE1 to periodically transmit an SRS, UE1 transmits an SRS to the base station according to the SRS parameters required by UE1 to periodically transmit an SRS. Alternatively, the first and second electrodes may be,
after detecting that the DCI includes the SRS control information corresponding to the UE1, the S203c2 and the UE1, if the SRS control information corresponding to the UE1 is used to instruct not to transmit the SRS, the UE1 does not transmit the SRS to the base station.
Wherein, when the ith UE corresponds toK of SRS control informationiBit-characterized
Figure GDA0001820703290000191
When the combination status corresponds to the second indication manner, if one bit of the SRS control information corresponding to the UE1 is used to indicate that the UE1 periodically transmits the SRS, before the UE1 transmits the SRS to the base station according to a set of SRS parameters required when the UE1 periodically transmits the SRS, or before the UE1 does not transmit the SRS to the base station, the method may further include:
the UE1 receives RRC2 signaling sent by a base station, wherein the RRC2 signaling includes a first identifier, and the first identifier is used for indicating that the periodic SRS is triggered by the DCI.
Further, if one bit of the SRS control information corresponding to the UE1 is used to indicate that the UE1 periodically transmits the SRS, the UE1 transmits the SRS to the base station according to a set of SRS parameters required when the UE1 periodically transmits the SRS, which may specifically include:
if one bit of the SRS control information corresponding to the UE1 is used to indicate the UE1 to periodically transmit the SRS, the UE1 transmits the SRS to the base station according to the first identifier and a set of SRS parameters required by the UE1 to periodically transmit the SRS;
if one bit of the SRS control information corresponding to the UE1 is used to indicate that the UE1 periodically transmits the SRS, the UE1 does not transmit the SRS to the base station, which may specifically include:
if one bit of the SRS control information corresponding to the UE1 is used to indicate the UE1 to periodically transmit the SRS, the UE1 does not transmit the SRS to the base station according to the first flag.
Similarly, when the ith UE corresponds to the SRS control information kiBit-characterized
Figure GDA0001820703290000192
When the combination status corresponds to the third indication manner, before the UE1 transmits the SRS to the base station according to a set of SRS parameters required by the UE1 to periodically transmit the SRS, or before the UE1 does not transmit the SRS to the base station, the method may further include:
the UE1 receives RRC2 signaling sent by a base station, wherein the RRC2 signaling includes a first identifier, and the first identifier is used for indicating that the periodic SRS is triggered by the DCI.
Further, the UE1 may send the SRS to the base station according to a set of SRS parameters required by the UE1 to periodically send the SRS, and the sending may specifically include:
the UE1 transmits the SRS to the base station according to the first identifier and a set of SRS parameters required when the UE1 periodically transmits the SRS;
the UE1 does not send the SRS to the base station, and specifically may include:
the UE1 does not transmit SRS to the base station according to the first identity.
That is to say, different from the triggering mechanism of the periodic SRS in the prior art, in the embodiment of the present invention, the periodic SRS is triggered by DCI, and since DCI belongs to dynamic configuration, it can be timely reconfigured or stopped, so that the requirement of flexible configuration can be met.
It should be noted that, specifically, the RRC2 signaling in the embodiment of the present invention may be that the existing RRC signaling carries the first identifier, so that the RRC2 signaling may carry the SRS parameter issued by the base station to the UE 1; of course, the RRC2 signaling may also be a newly defined signaling used to carry the first identifier, and thus, the RRC2 signaling does not carry the SRS parameter issued by the base station to the UE1, and is an RRC signaling issued separately.
Optionally, based on the embodiment shown in fig. 3, when the method for triggering an uplink sounding signal provided in the embodiment of the present invention is used for triggering an aperiodic SRS, as shown in fig. 6, the method may further include steps S204 to S205:
s204, the base station sends RRC3 signaling to the UE1, the RRC3 signaling carries indication information, the indication information is used for indicating triggering of one-time aperiodic SRS, the UE sends M times SRS, and M is a positive integer not less than 1.
S205, the UE1 receives the RRC3 signaling sent by the base station.
Optionally, after detecting that the DCI includes the SRS control information corresponding to the UE1, if the SRS control information corresponding to the UE1 is used to indicate a group of SRS parameters required by the UE1 when the SRS is aperiodically transmitted, the UE1 transmits the SRS to the base station according to the group of SRS parameters required by the UE1 when the SRS is aperiodically transmitted (step S203a1), which specifically includes:
after S203a11 and UE1 detect that the DCI includes SRS control information corresponding to UE1, if the SRS control information corresponding to UE1 is used to instruct UE1 to aperiodically transmit SRS, UE1 transmits M SRS to the base station according to the SRS control information and the SRS control information corresponding to UE 1.
Or, based on the embodiment shown in fig. 4, when the method for triggering an uplink sounding signal provided in the embodiment of the present invention is used for triggering an aperiodic SRS, as shown in fig. 7, the method may further include steps S204 to S205:
s204, the base station sends RRC3 signaling to the UE1, the RRC3 signaling carries indication information, the indication information is used for indicating triggering of one-time aperiodic SRS, the UE sends M times SRS, and M is a positive integer not less than 1.
S205, the UE1 receives the RRC3 signaling sent by the base station.
Optionally, after detecting that the DCI includes the SRS control information corresponding to the UE1, if one bit of the SRS control information corresponding to the UE1 is used to instruct the UE1 to aperiodically transmit the SRS, and the remaining bits of the SRS control information corresponding to the UE1 except the one bit are used to instruct the UE1 to aperiodically transmit a group of SRS parameters required when the SRS is transmitted, and the UE1 transmits the SRS to the base station according to the group of SRS parameters required when the SRS is aperiodically transmitted by the UE1 (step S203b3), which specifically includes:
after S203b31 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, if one bit of the SRS control information corresponding to UE1 is used to instruct UE1 to aperiodically transmit SRS, and the remaining bits of the SRS control information corresponding to UE1 except the one bit are used to instruct UE1 to aperiodically transmit SRS for a set of SRS parameters, UE1 transmits M times SRS to the base station according to the set of SRS parameters required when UE1 aperiodically transmits SRS in combination with the instruction information.
That is to say, when the triggering method of the uplink sounding signal provided by the embodiment of the present invention is used for triggering the aperiodic SRS, the SRS may be triggered M times through one DCI, and compared with a manner in which one DCI can only trigger one UE to send the SRS once when the aperiodic SRS is triggered in the prior art, the method can save DCI signaling and reduce signaling overhead.
It should be noted that, in the embodiment of the present invention, the RRC3 signaling may specifically be that the indication information is carried in an existing RRC signaling, so that the RRC3 signaling may carry the SRS parameter issued by the base station to the UE 1; of course, the RRC3 signaling may also be a newly defined signaling used to carry the indication information, so that the RRC3 signaling does not carry the SRS parameter issued by the base station to the UE1, and is an RRC signaling issued separately, which is not specifically limited in this embodiment of the present invention.
It should be noted that, in the embodiment of the present invention, there is no inevitable sequential execution order between step S204 and step S201, and step S204 may be executed first, and then step S201 may be executed; step S201 may be executed first, and then step S204 may be executed; step S204 and step S201 may also be executed simultaneously, which is not specifically limited in this embodiment of the present invention.
Based on the method for triggering the uplink sounding signal provided in the embodiment of the present invention, since one piece of DCI transmitted by the base station through the physical downlink control channel includes SRS control information corresponding to each UE in a UEs in a cell managed by the base station, after the UE1 receives the DCI transmitted by the base station and detects that the DCI includes the SRS control information corresponding to the UE1, the UE may trigger the SRS according to the SRS control information corresponding to the UE1, where a is a positive integer not less than 2. That is to say, one DCI in the embodiment of the present invention may trigger multiple UEs to transmit an SRS at a time, so that when multiple UEs need to configure the SRS quickly in a short time in a wireless communication system, signaling overhead of a physical layer PDCCH/EPDCCH may be saved, and different from a mechanism for triggering a periodic SRS in the prior art, in the embodiment of the present invention, the SRS is triggered by the DCI regardless of the periodic SRS or the aperiodic SRS, and since the DCI belongs to dynamic configuration, the DCI may be timely reconfigured or stopped, so that a flexible configuration requirement may be met.
Based on the triggering system of the uplink sounding reference signal shown in fig. 1, an embodiment of the present invention provides a method for triggering an uplink sounding reference signal, which takes interaction between a base station and a UE1 as an example, where the UE1 is any UE in a cell managed by the base station, as shown in fig. 8, the method includes steps S801 to S805:
s801, the base station sends an RRC4 signaling, wherein the RRC4 signaling comprises a first identifier, and the first identifier is used for indicating that the periodic SRS is triggered by the DCI.
S802, the UE1 receives the RRC4 signaling sent by the base station.
S803, the base station transmits a DCI through a physical downlink control channel, where the DCI includes SRS control information corresponding to an i-th UE in a cell managed by the base station.
Wherein i is more than or equal to 1 and less than or equal to N, N is the total number of the UE in the cell managed by the base station, and i and N are positive integers.
S804, UE1 receives the DCI transmitted by the base station.
S805 and UE1 detect that the DCI includes the SRS control information corresponding to UE1, and trigger the SRS according to the first identifier and the SRS control information corresponding to UE 1.
Specifically, in step S801 in the embodiment of the present invention:
it should be noted that, specifically, the RRC4 signaling in the embodiment of the present invention may be that the existing RRC signaling carries the first identifier, so that the RRC4 signaling may carry the SRS parameter issued by the base station to the UE 1; of course, the RRC4 signaling may also be a newly defined signaling used to carry the first identifier, and thus, the RRC4 signaling does not carry the SRS parameter issued by the base station to the UE1, and is an RRC signaling issued separately.
Specifically, in steps S803 to S805 in the embodiment of the present invention:
in order to determine whether to trigger an aperiodic SRS or a periodic SRS when UE1 receives DCI in a scenario where DCI may be used to trigger the aperiodic SRS or may be used to trigger the periodic SRS, the embodiment of the present invention provides two implementation manners:
in a first possible implementation manner, the indication may be performed by one bit of SRS control information corresponding to the UE.
Specifically, assume that the number of bits of SRS control information corresponding to the ith UE is kiThen k isiBit-characterized
Figure GDA0001820703290000221
The indication mode of the combination state can beReferring to the second indication mode in the embodiment shown in fig. 2, the embodiment of the present invention is not described herein again.
When k of SRS control information corresponding to ith UEiBit-characterized
Figure GDA0001820703290000222
When the combination status corresponds to the second indication manner, after the UE1 detects that the DCI includes the SRS control information corresponding to the UE1 in step S805, reference may be made to the embodiment shown in fig. 4 for specific implementation of triggering the SRS according to the first identifier and the SRS control information corresponding to the UE1, and details of the embodiment of the present invention are not repeated herein.
In a second possible implementation manner, two RNTIs may be configured for the UE, one corresponding to the periodic SRS and one corresponding to the aperiodic SRS, and when the periodic SRS is triggered by the base station, the RNTI corresponding to the periodic SRS is used; and when the base station triggers the periodic SRS, using the RNTI corresponding to the periodic SRS.
Specifically, the CRC of the DCI is scrambled by a first RNTI or a second RNTI, where the first RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station periodically transmits the SRS, and the second RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station aperiodically transmits the SRS.
Further, after detecting that the DCI includes the SRS control information corresponding to the UE1, the UE1 triggers the SRS according to the first identifier and the SRS control information corresponding to the UE1 (step S801), which may specifically include:
if the UE1 detects that the DCI includes the SRS control information corresponding to the UE1 by using the first RNTI, and the SRS control information corresponding to the UE1 is used to indicate a set of SRS parameters required when the UE1 periodically transmits the SRS, the UE1 transmits the SRS to the base station according to the first identifier and the set of SRS parameters required when the UE1 periodically transmits the SRS;
if the UE1 detects that the DCI includes the SRS control information corresponding to the UE1 by using the first RNTI and the SRS control information corresponding to the UE1 indicates that the UE1 does not transmit the SRS, the UE1 does not transmit the SRS to the base station according to the first identifier;
if the UE1 detects that the DCI includes the SRS control information corresponding to the UE1 by using the second RNTI, and the SRS control information corresponding to the UE1 is used to indicate a set of SRS parameters required when the UE1 aperiodically transmits the SRS, the UE1 transmits the SRS to the base station according to the first identifier and the set of SRS parameters required when the UE1 aperiodically transmits the SRS;
if the UE1 detects that the DCI includes the SRS control information corresponding to the UE1 using the second RNTI and the SRS control information corresponding to the UE1 indicates that the UE1 does not transmit the SRS, the UE1 does not transmit the SRS to the base station according to the first identifier.
It should be noted that, in the above embodiment, the DCI may be used to trigger the aperiodic SRS or may be used to trigger the periodic SRS is taken as an example for explanation, and of course, the DCI may also be used to trigger the periodic SRS only, which is not specifically limited in the embodiment of the present invention.
When the DCI is only used for triggering the periodic SRS, k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000223
The indication manner of the combination status may specifically refer to the indication manner three in the embodiment shown in fig. 2, which is not specifically limited in the embodiment of the present invention.
Preferably, the base station may configure an SRS parameter of a new transmission mode (which may be denoted as type 2) for the UE, where the SRS parameter is a periodic SRS parameter and may be triggered by DCI format 0/4/1a and DCI format 2B/2C/2D in an existing protocol.
When the higher layer RRC signaling configures a group of RRC parameters of type 2 for each UE and 1 bit in the DCI formats0/1A/2B/2C/2D triggers the group of SRS, "1" indicates that the type 2 mode is triggered to transmit the periodic SRS, and "0" indicates that the periodic SRS is not transmitted; alternatively, "0" indicates that the periodic SRS is triggered to be transmitted in the type 2 mode, and "1" indicates that the periodic SRS is not transmitted, which is not specifically limited in the embodiment of the present invention.
When 2 bits in DCI format 4 trigger SRS parameters of configuration type 2 for each UE, as shown in table one, the reserved "00" state indicates that no periodic SRS is transmitted, and the remaining states indicate a set of SRS parameters required when the periodic SRS is triggered.
The embodiment of the present invention does not specifically limit the above scenario.
It should be noted that the manner of configuring the new SRS parameter of transmission mode type 2 for the UE is also applicable to the above embodiments each including the periodic triggered SRS, and the embodiments of the present invention are not described in detail herein.
Different from the triggering mechanism of the periodic SRS in the prior art, in the embodiment of the present invention, the base station sends an RRC4 signaling, where the RRC4 signaling includes a first identifier, and the first identifier is used to indicate that the SRS is triggered by DCI. In this way, after receiving a DCI which includes SRS control information corresponding to the ith UE in a cell managed by a base station and is sent by the base station and detecting that the DCI includes the SRS control information corresponding to the UE1, the UE1 may trigger the SRS according to the first identifier and the SRS control information corresponding to the UE 1.
As shown in fig. 9, the embodiment of the present invention provides an apparatus, which may be a base station 90, where the base station 90 is configured to perform the steps performed by the base station in the methods shown in fig. 2 to fig. 7. The base station 90 may include modules corresponding to the respective steps, and for example, may include:
a sending unit 901, configured to send a DCI through a physical downlink control channel, where the DCI includes SRS control information corresponding to each UE in a UEs in a cell managed by the base station 90, and a is a positive integer not less than 2.
Optionally, the number of bits of the SRS control information corresponding to the ith UE in the a UEs is kiWherein i is not less than 1 and not more than a and is an integer, kiIs a positive integer not less than 1.
In the embodiment of the invention, for different application scenes, k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000231
The combination status corresponds to different indication manners, and reference may be specifically made to the indication manner one, the indication manner two, or the indication manner three in the above method embodiment, which is not described herein again in this embodiment of the present invention.
Optionally, the sending unit 901 is further configured to send a first RRC signaling to the UE, where the first RRC signaling includes a first identifier, and the first identifier is used to indicate that the periodic SRS is triggered by the DCI.
Optionally, the sending unit 901 is further configured to send a second RRC signaling to the UE, where the second RRC signaling carries a corresponding relationship between the bit position of the DCI and each UE in the a UEs.
Optionally, the sending unit 901 is further configured to send a third RRC signaling to the UE, where the third RRC signaling carries indication information, where the indication information is used to indicate that a one-time aperiodic SRS is triggered, and the UE sends the SRS for M times, where M is a positive integer not less than 1.
It can be understood that the base station 90 according to the embodiment of the present invention may correspond to the base station in the method for detecting an uplink channel according to any one of the embodiments of fig. 2 to fig. 7, and the division and/or the functions of the modules in the base station 90 according to the embodiment of the present invention are all for implementing the method flow shown in any one of fig. 2 to fig. 7, and are not described herein again for brevity.
Since the base station 90 in the embodiment of the present invention may be configured to execute the above method process, reference may also be made to the above method embodiment for obtaining technical effects, and details of the embodiment of the present invention are not repeated herein.
As shown in fig. 10, an apparatus, which may be a UE100, is provided in the embodiment of the present invention, where the UE100 is configured to perform the steps performed by the UE in the methods shown in fig. 2 to fig. 7. The UE100 may include modules corresponding to the respective steps, and for example, may include:
a receiving unit 1001, configured to receive a DCI sent by a base station, where the DCI includes SRS control information corresponding to each UE in a user equipments UEs in a cell where the base station is located, where a is a positive integer not less than 2.
A processing unit 1002, configured to trigger an SRS according to the SRS control information corresponding to the UE100 after detecting that the DCI includes the SRS control information corresponding to the UE 100.
Optionally, the number of bits of the SRS control information corresponding to the ith UE in the a UEs is kiWherein i is not less than 1 and not more than a and is an integer, kiIs a positive integer not less than 1.
In the embodiment of the invention, for different application scenes, k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000241
The combination status corresponds to different indication manners, and reference may be specifically made to the indication manner one, the indication manner two, or the indication manner three in the above method embodiment, which is not described herein again in this embodiment of the present invention.
Optionally, as shown in fig. 11, the UE100 further includes a sending unit 1003.
When the indication mode is one, the processing unit 1002 is specifically configured to:
if the SRS control information corresponding to the UE100 is used to indicate a set of SRS parameters required for the UE100 to aperiodically transmit SRS, the transmitting unit 1003 transmits SRS to the base station according to the set of SRS parameters required for the UE100 to aperiodically transmit SRS. Alternatively, the first and second electrodes may be,
and if the SRS control information corresponding to the UE100 is used to indicate that the SRS is not to be transmitted, not transmitting the SRS to the base station.
Or, when the second indication mode corresponds to the second indication mode, the processing unit 1002 is specifically configured to:
if one bit of the SRS control information corresponding to the UE100 is used to instruct the UE100 to periodically transmit the SRS, the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to instruct a set of SRS parameters required when the UE100 periodically transmits the SRS, and the SRS is transmitted to the base station through the transmitting unit 1003 according to the set of SRS parameters required when the UE100 periodically transmits the SRS. Alternatively, the first and second electrodes may be,
if one bit of the SRS control information corresponding to the UE100 is used to indicate that the UE100 periodically transmits the SRS, the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to indicate that the UE100 does not transmit the SRS and does not transmit the SRS to the base station. Alternatively, the first and second electrodes may be,
if one bit of the SRS control information corresponding to the UE100 is used to indicate that the UE100 aperiodically transmits the SRS, and the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to indicate a set of SRS parameters required when the UE100 aperiodically transmits the SRS, the transmitting unit 1003 transmits the SRS to the base station according to the set of SRS parameters required when the UE100 aperiodically transmits the SRS. Alternatively, the first and second electrodes may be,
if one bit of the SRS control information corresponding to the UE100 is used to indicate that the UE100 aperiodically transmits the SRS, the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to indicate that the UE100 does not transmit the SRS and does not transmit the SRS to the base station.
Or, when the indication mode corresponds to the third indication mode, the processing unit 1002 is specifically configured to:
if the SRS control information corresponding to the UE100 is used to instruct the UE100 to periodically transmit the set of SRS parameters required for SRS transmission, the transmitting unit 1003 transmits the SRS to the base station according to the set of SRS parameters required for the UE100 to periodically transmit the SRS. Alternatively, the first and second electrodes may be,
and if the SRS control information corresponding to the UE100 is used to indicate that the SRS is not to be transmitted, not transmitting the SRS to the base station.
Optionally, when the second indication mode is used, the receiving unit 1001 is further configured to receive, if one bit in the SRS control information corresponding to the UE100 is used to indicate that the UE100 periodically transmits an SRS, a second RRC signaling sent by the base station before the processing unit 1002 sends the SRS to the base station through the sending unit 1003 according to a group of SRS parameters required when the UE100 periodically transmits the SRS, or before the processing unit 1002 does not send the SRS to the base station, where the second RRC signaling includes a first identifier, and the first identifier is used to indicate that the periodic SRS is triggered by the DCI.
Further, the processing unit 1002 is specifically configured to:
if one bit in the SRS control information corresponding to the UE100 is used to instruct the UE100 to periodically transmit an SRS, the SRS is transmitted to the base station through the transmitting unit 1003 according to the first identifier and a group of SRS parameters required when the UE100 periodically transmits the SRS, or the SRS is not transmitted to the base station according to the first identifier.
Optionally, the receiving unit 1001 is further configured to receive a first RRC signaling sent by the base station, where the first RRC signaling carries a correspondence between a bit position of the DCI and each UE in the a UEs;
the processing unit 1002 is further configured to determine, according to the corresponding relationship, SRS control information corresponding to the UE 100.
Optionally, the receiving unit 1001 is further configured to receive a third RRC signaling sent by the base station, where the third RRC signaling carries indication information, where the indication information is used to indicate that a primary aperiodic SRS is triggered, and the UE sends the SRS for M times, where M is a positive integer not less than 1.
Further, the processing unit 1002 is specifically configured to:
according to a set of SRS parameters required when the UE100 transmits an SRS aperiodically, the transmitting unit 1003 transmits the SRS to the base station M times in combination with the indication information.
It can be understood that the UE100 according to the embodiment of the present invention may correspond to the UE in the method for detecting an uplink channel according to any one of the embodiments of fig. 2 to fig. 7, and the division and/or the functions of the modules in the UE100 according to the embodiment of the present invention are all for implementing the method flow shown in any one of fig. 2 to fig. 7, and are not repeated herein for brevity.
Since the UE100 in the embodiment of the present invention may be configured to execute the above method procedure, reference may also be made to the above method embodiment for obtaining technical effects, and the embodiment of the present invention is not described herein again.
Optionally, the UE100 shown in fig. 10 or fig. 11 may be further configured to perform the steps performed by the UE in the method shown in fig. 8, where:
the receiving unit 1001 is configured to receive an RRC signaling sent by a base station, where the RRC signaling includes a first identifier, and the first identifier is used to indicate that a periodic SRS is triggered by downlink control information DCI.
The receiving unit 1001 is further configured to receive a DCI sent by the base station, where the DCI includes SRS control information corresponding to an ith UE in a cell managed by the base station, i is greater than or equal to 1 and less than or equal to N, N is a total number of UEs 100 in the cell managed by the base station, and i and N are positive integers.
The processing unit 1002 is configured to trigger an SRS according to the first identifier and the SRS control information corresponding to the UE100 after detecting that the DCI includes the SRS control information corresponding to the UE 100.
Optionally, k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000261
The combination status can be indicated by the indication mode two in the above method embodiment, and the embodiment of the present invention is not described herein again.
Further, the processing unit 1002 is specifically configured to:
if one bit of the SRS control information corresponding to the UE100 is used to indicate that the UE100 periodically transmits the SRS, and the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to indicate a group of SRS parameters required when the UE100 periodically transmits the SRS, the SRS is transmitted to the base station through the transmitting unit 1003 according to the first identifier and the group of SRS parameters required when the UE100 periodically transmits the SRS. Alternatively, the first and second electrodes may be,
if one bit of the SRS control information corresponding to the UE100 is used to indicate that the UE100 periodically transmits the SRS, and the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to indicate that the UE100 does not transmit the SRS, the SRS is not transmitted to the base station according to the first identifier. Alternatively, the first and second electrodes may be,
if one bit of the SRS control information corresponding to the UE100 is used to indicate that the UE100 aperiodically transmits the SRS, and the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to indicate a set of SRS parameters required when the UE100 aperiodically transmits the SRS, the transmitting unit 1003 transmits the SRS to the base station according to the set of SRS parameters required when the UE100 aperiodically transmits the SRS. Alternatively, the first and second electrodes may be,
if one bit of the SRS control information corresponding to the UE100 is used to indicate that the UE100 aperiodically transmits the SRS, the remaining bits of the SRS control information corresponding to the UE100 except the one bit are used to indicate that the UE100 does not transmit the SRS and does not transmit the SRS to the base station.
Optionally, the CRC of the DCI is scrambled by a first RNTI or a second RNTI, where the first RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station periodically transmits the SRS, and the second RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station aperiodically transmits the SRS.
Further, the processing unit 1002 is specifically configured to:
if the UE100 detects that the DCI includes the SRS control information corresponding to the UE100 by using the first RNTI and the SRS control information corresponding to the UE100 is used to instruct the UE100 to periodically transmit a set of SRS parameters required when the SRS is transmitted, the UE100 transmits the SRS to the base station through the transmitting unit 1003 according to the first identifier and the set of SRS parameters required when the SRS is periodically transmitted by the UE 100. Alternatively, the first and second electrodes may be,
if the UE100 detects that the DCI includes the SRS control information corresponding to the UE100 by using the first RNTI, and the SRS control information corresponding to the UE100 is used to instruct the UE100 not to transmit the SRS, the SRS is not transmitted to the base station according to the first identifier. Alternatively, the first and second electrodes may be,
if the UE100 detects that the DCI includes the SRS control information corresponding to the UE100 by using the second RNTI and the SRS control information corresponding to the UE100 is used to indicate a set of SRS parameters required when the UE100 aperiodically transmits an SRS, the UE transmits the SRS to the base station through the transmitting unit 1003 according to the first identifier and the set of SRS parameters required when the UE100 aperiodically transmits the SRS. Alternatively, the first and second electrodes may be,
if the UE100 detects that the DCI includes the SRS control information corresponding to the UE100 by using the second RNTI, and the SRS control information corresponding to the UE100 is used to instruct the UE100 not to transmit the SRS, the SRS is not transmitted to the base station according to the first identifier.
It can be understood that the UE100 according to the embodiment of the present invention may correspond to the UE in the method for detecting an uplink channel as described in the embodiment of fig. 8, and the division and/or the functions of the modules in the UE100 according to the embodiment of the present invention are all for implementing the method flow shown in fig. 8, and are not repeated herein for brevity.
Since the UE100 in the embodiment of the present invention may be configured to execute the above method procedure, reference may also be made to the above method embodiment for obtaining technical effects, and the embodiment of the present invention is not described herein again.
Optionally, the base station 90 shown in fig. 9 may be further configured to perform the steps performed by the base station 90 in the method shown in fig. 8, where:
the sending unit 901 is configured to send an RRC signaling, where the RRC signaling includes a first identifier, and the first identifier is used to indicate that the SRS is triggered by the DCI.
The transmitting unit 901 is configured to transmit a DCI through a physical downlink control channel, where the DCI includes SRS control information corresponding to an ith UE in a cell managed by the base station 90, i is greater than or equal to 1 and less than or equal to N, N is a total number of UEs in the cell managed by the base station 90, and i and N are positive integers.
Optionally, k of SRS control information corresponding to the ith UEiBit-characterized
Figure GDA0001820703290000271
The combination status can be indicated by the indication mode two in the above method embodiment, and the embodiment of the present invention is not described herein again.
Optionally, the CRC of the DCI is scrambled by a first RNTI or a second RNTI, where the first RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station 90 periodically transmits the SRS, and the second RNTI is an RNTI corresponding to when the ith UE in the cell managed by the base station 90 aperiodically transmits the SRS.
It can be understood that the base station 90 according to the embodiment of the present invention may correspond to the base station in the method for detecting an uplink channel as described in the embodiment of fig. 8, and the division and/or the functions of the modules in the base station 90 according to the embodiment of the present invention are all for implementing the method flow shown in fig. 8, and are not described herein again for brevity.
Since the base station 90 in the embodiment of the present invention may be configured to execute the above method process, reference may also be made to the above method embodiment for obtaining technical effects, and details of the embodiment of the present invention are not repeated herein.
As shown in fig. 12, an embodiment of the present invention provides an apparatus, which may be a base station 120, where the base station 120 includes: a processor 1201, a memory 1202, a system bus 1203, and a communication interface 1204.
The memory 1202 is configured to store computer-executable instructions, the processor 1201 is connected to the memory 1202 through the system bus, and when the base station 1202 operates, the processor 1201 executes the computer-executable instructions stored in the memory 1203 to enable the base station 120 to perform the method for uplink channel sounding as described in any one of fig. 2 to 8. For a specific uplink channel sounding method, reference may be made to the related description in the embodiment shown in any one of fig. 2 to fig. 8, and details are not repeated here.
The present embodiment also provides a storage medium, which may include the memory 1202.
The processor 1201 may be a Central Processing Unit (CPU). The processor 1201 may also be other general-purpose processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The processor 1201 may be a dedicated processor that may include at least one of a baseband processing chip, a radio frequency processing chip, and the like. Further, the dedicated processor may also include chips with other dedicated processing functions for the base station 120.
The memory 1202 may include a volatile memory (RAM), such as a random-access memory (random-access memory); the memory 1202 may also include a non-volatile memory (english: non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD), or a solid-state disk (SSD); the memory 1202 may also comprise a combination of memories of the above-mentioned kinds.
The system bus 1203 may include a data bus, a power bus, a control bus, a signal status bus, and the like. In this embodiment, the various buses are illustrated in FIG. 12 as system bus 1203 for the sake of clarity.
The communication interface 1204 may specifically be a transceiver on the base station 120. The transceiver may be a wireless transceiver. For example, the wireless transceiver may be an antenna of the base station 120, or the like. The processor 1201 transmits and receives data to and from other devices, such as UEs, through the communication interface 1204.
In a specific implementation process, each step in the method flow shown in any one of fig. 2 to 8 can be implemented by the processor 1201 in a hardware form executing computer execution instructions in a software form stored in the memory 1202. To avoid repetition, further description is omitted here.
Since the base station 120 provided in the embodiment of the present invention can be used to execute the above method process, the technical effect obtained by the base station 120 can refer to the above method embodiment, and will not be described herein again.
As shown in fig. 13, an apparatus according to an embodiment of the present invention may be an apparatus, where the apparatus may be a UE130, and the UE130 includes: a processor 1301, memory 1302, a system bus 1303, and a communication interface 1304.
The memory 1302 is configured to store computer-executable instructions, the processor 1301 is connected to the memory 1302 through the system bus, and when the UE1302 runs, the processor 1301 executes the computer-executable instructions stored in the memory 1303, so that the UE130 executes the method for uplink channel sounding as described in any one of fig. 2 to fig. 8. For a specific uplink channel sounding method, reference may be made to the related description in the embodiment shown in any one of fig. 2 to fig. 8, and details are not repeated here.
The present embodiment also provides a storage medium, which may include the memory 1302.
The processor 1301 may be a CPU. The processor 1301 may also be other general purpose processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The processor 1301 may be a dedicated processor that may include at least one of a baseband processing chip, a radio frequency processing chip, and the like. Further, the dedicated processor may also include chips with other dedicated processing functions for the UE 130.
The memory 1302 may include volatile memory, such as Random Access Memory (RAM); the memory 1302 may also include a non-volatile memory, such as a read only memory ROM, flash memory, HDD or SSD; the memory 1302 may also include a combination of the above types of memory.
The system bus 1303 may include a data bus, a power bus, a control bus, a signal status bus, and the like. In this embodiment, for clarity of illustration, various buses are illustrated as system bus 1303 in FIG. 13.
The communication interface 1304 may specifically be a transceiver on the UE 130. The transceiver may be a wireless transceiver. For example, the wireless transceiver may be an antenna of the UE130, or the like. The processor 1301 transmits and receives data to and from other devices, such as a base station, through the communication interface 1304.
In a specific implementation process, each step in the method flow shown in any one of fig. 2 to 8 can be implemented by the processor 1301 in a hardware form executing computer execution instructions in a software form stored in the memory 1302. To avoid repetition, further description is omitted here.
Since the base station 130 provided in the embodiment of the present invention can be used to execute the above method process, the technical effect obtained by the base station can refer to the above method embodiment, and will not be described herein again.
The embodiment of the invention provides a system for triggering an uplink detection signal, which comprises a base station and a plurality of UE (user equipment) in a cell managed by the base station. Taking the triggering system of the uplink sounding signal shown in fig. 1 as an example, the multiple UEs may be 6 UEs, and the 6 terminals are UE1, UE2, UE3, UE4, UE5, and UE6, respectively. For the description of these 6 UEs, reference may be specifically made to the related description of the UE in the embodiments shown in fig. 10, fig. 11, and fig. 13, and for the description of the base station, reference may be specifically made to the related description of the base station in the embodiments shown in fig. 9 and fig. 12, which is not described herein again.
In the system for triggering an uplink sounding signal provided in the embodiment of the present invention, each UE in a plurality of UEs respectively completes a method for triggering an uplink sounding signal according to the embodiment of the present invention by executing corresponding steps in a method flow shown in any one of fig. 2 to 8; correspondingly, the base station completes the triggering method of the uplink sounding signal according to the embodiment of the present invention by executing corresponding steps in the method flow shown in any one of fig. 2 to fig. 8.
Since the triggering system of the uplink sounding reference signal provided in the embodiment of the present invention includes the UE shown in fig. 10, 11, and 13 and the base station shown in fig. 9 and 12, and the UE shown in fig. 10, 11, and 13 and the base station shown in fig. 9 and 12 may be used to execute the method flow shown in any one of fig. 2 to 8, the technical effect that can be obtained by the triggering system of the uplink sounding reference signal may refer to the description in the method embodiment, and the embodiment of the present invention is not described again here.
It will be clear to those skilled in the art that, for convenience and simplicity of description, the above-described apparatus is only illustrated by the division of the above functional modules, and in practical applications, the above-described function distribution may be performed by different functional modules according to needs, that is, the internal structure of the apparatus is divided into different functional modules to perform all or part of the above-described functions. For the specific working processes of the system, the apparatus, and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (english: processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, ROM, RAM), magnetic disk or optical disk, etc.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (16)

1. A method for triggering an uplink sounding signal, the method comprising:
a base station sends a downlink control information DCI through a physical downlink control channel, wherein the DCI comprises sounding reference signal SRS control information corresponding to each UE in a user equipment UE in a cell managed by the base station, and a is a positive integer not less than 2;
the bit number of SRS control information corresponding to the ith UE in the a UEs is kiWherein i is not less than 1 and not more than a and is an integer, kiIs a positive integer not less than 1.
2. The method of claim 1, further comprising:
and the base station transmits the position information of the SRS control information bit of the UE in the DCI.
3. The method of claim 2, wherein the location information is sent via radio resource management (RRC) signaling.
4. The method of claim 2, wherein the location information comprises information of a starting location.
5. The method of claim 1, further comprising:
the base station scrambles the Cyclic Redundancy Check (CRC) of the DCI by using a Radio Network Temporary Identifier (RNTI);
the method further comprises the following steps:
and the base station sends the RNTI to the a pieces of UE.
6. The method according to any of claims 1-5, wherein k is the SRS control information corresponding to the ith UEiBit-characterized
Figure FDA0002257318850000011
S in a combined stateiThe combination status is respectively used for indicating a group of SRS parameters required by the UE when the SRS is transmitted aperiodically, and the combination status is used for indicating the UE to transmit the SRS parameters periodically
Figure FDA0002257318850000012
In a combined state except for siOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure FDA0002257318850000013
siare integers.
7. The method according to any one of claims 1-5, further comprising:
the base station sends a third RRC (RRC3) signaling to one of the a UEs, the third RRC signaling carries indication information, the indication information is used for indicating triggering of one-time aperiodic SRS, the UEs send M times SRS, and M is a positive integer not less than 1.
8. A base station, comprising: a processor, a memory, a system bus, and a communication interface;
the memory is used for storing computer execution instructions, the processor is connected with the memory through the system bus, and when the base station runs, the processor executes the computer execution instructions stored in the memory, so that the base station executes the triggering method of the uplink sounding signal according to any one of claims 1 to 7.
9. A storage medium storing computer-executable instructions; the method of triggering an uplink sounding signal according to any of claims 1-7 is implemented when the instructions are executed.
10. An apparatus for triggering an uplink sounding signal, the apparatus comprising:
a sending unit, configured to send a downlink control information DCI through a physical downlink control channel, where the DCI includes sounding reference signal SRS control information corresponding to each UE in a user equipment UE in a cell managed by a base station, and a is a positive integer not less than 2;
the bit number of SRS control information corresponding to the ith UE in the a UEs is kiWherein i is not less than 1 and not more than a and is an integer, kiIs a positive integer not less than 1.
11. The apparatus of claim 10,
the transmitting unit is further configured to transmit position information of the SRS control information bits of the UE in the DCI.
12. The apparatus of claim 11, wherein the location information is carried in radio resource control signaling.
13. The apparatus of claim 11, wherein the position of the UE-corresponding SRS control information in the DCI comprises a starting position.
14. The apparatus according to any of claims 10-13, further comprising a processing unit configured to scramble a cyclic redundancy check, CRC, of the DCI with a radio network temporary identity, RNTI,
the sending unit is further configured to send the RNTI to the a UEs.
15. The apparatus according to any of claims 10-13, wherein k is an SRS control information corresponding to the ith UEiBit-characterized
Figure FDA0002257318850000021
S in a combined stateiThe combination status is respectively used for indicating a group of SRS parameters required by the UE when the SRS is transmitted aperiodically, and the combination status is used for indicating the UE to transmit the SRS parameters periodically
Figure FDA0002257318850000022
In a combined state except for siOne of the combination states outside the combination states is used to indicate that the UE does not transmit SRS,
Figure FDA0002257318850000023
siare integers.
16. The apparatus according to any one of claims 10 to 13, wherein the transmitting unit is further configured to transmit a third RRC (RRC3) signaling to one of the a UEs, where the third RRC signaling carries indication information, where the indication information is used to indicate that an aperiodic SRS is triggered once, and the UE transmits the SRS M times, where M is a positive integer not less than 1.
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